You can buy Dun Foals on Desert Isle.
~TheShadow, Dun server
The only place I've seen so far (where I know you can, for sure, get a miniature foal) is the Foal Adoption Center on Jungle Isle.
Jungle Isle Foal Adoption Center carries and unlimited supply of cremello foals
At the Desert isle foal adoption center. They cost 165k. ShireQueen on Cremello
For jumping etc its either a Phoenix or a Dragon which are 50.2 million from Lava isle. Otherwise get a foal from a foal adoption centre for 165k.
At the Horse Isle Foal Adoption Center (north of Equestrian Park, west of the Whisperer and Pawneer), you can purchase a palomino overo foal.At the Desert Isle Foal Adoption Center (east of Hotton), you can purchase a chestnut overo foal and a bay overo foal.At the Jungle Isle Foal Adoption Center (south of Tropicton), you can get the black overo foal.Aveline, Bay Server.
Jungle Foal Adoption Center (on Jungle Isle). -Vallina from Pinto
Desert Isle Foal Center
Cremello, White, Black, Palomino, Brown, Brown Draft Foal, Cria, Zebra Foal, Grey, Overo, Tobiano, Leopard Spotted Foal, Chestnut, Bay Blanket Foal, Strawberry Roan Foal, Blue Roan Foal.
I THINK you get it from the woman in charge of the foal shop on desert isle. Talk to her. The foal shop is east from hotton CookieCupcakes, cremello server
You can't breed on Horse Isle. To get a horse you must buy one or find a wild horse. If you want a foal, you can buy one from the Foal Adoption Centre and put it as a companion for your horse. - SpotRock, Bay Server
Still unsure! Whitherton on Rider Isle! BarbaroLady from Cremello Server on Horse Isle and Yola from Cremello!
Piebald foals can bought at the Jungle Isle Foal Adoption Center for 165k each.(For more help check out: http://tipisle.webs.com)
No, horses on Horse Isle never age or die. If you'd like a foal for your horses you can buy one from a Foal companion shop for 165k.